CHARLES ROSS & SON CO.: Planetary Mixers

Ross Planetary Mixers are now offered with improved sealed and purged gearbox assemblies for sensitive applications requiring tight protection against contamination. Shown are Ross 40-gal double planetary mixers designed for sanitary formulations. Two rectangular planetary blades rotate on their own axes while they orbit the mix vessel on a common axis. This mixing action is reportedly ideal for moving viscous fluids or wet granulations.

The stainless steel, heavy-duty sealed gearbox housing includes a sloped cover to prevent contamination and pooling of condensed liquids. Solvent vapors and airborne particles can then be prevented from entering the purged gearbox. These mixers also feature a gable-roofed bonnet that can avoid dust or water collection. All ports and connections are sanitary tri-clamp design. Atomizing spray nozzles are installed on dedicated ports for the controlled and spill-free addition of liquid raw materials into the batch.

Other optional features recommended for sensitive mixing applications include flush discharge plugs or valves, covers for use with the portable mix vessels during transport, and controls integrating the mixer with auxiliary equipment such as vacuum pumps, heating/cooling units, load cells, etc. Pre-programmed and pre-wired controls are provided for fast installation and startup.